Bosnian police say 11 people have been arrested on suspicions of links to Islamic State.

The suspects were detained in raids in the wider Sarajevo area, including near the military barracks where a gunman killed two Bosnian soldiers in November in a shooting spree that authorities said was an apparent terrorist attack.

"So far 11 individuals suspected of terrorism, financing of terrorist activities, and recruiting Islamic State fighters have been arrested in raids on 13 locations," a spokeswoman for the police directorate of Bosnia's autonomous Bosniak-Croat Federation said on December 22.

A regional television station reported that around 100 police officers took part in the raids.

Police have said that more than 150 Bosnians have left to fight for Islamic State in Syria and Iraq over the past few years.